#main ul{
	overflow:hidden;
}
#main ul li{
	background:blue;
	clear:both;
	height:45px;
	margin-top:15px;
	margin-left:350px;
	padding-top:25px;
}
#main ul li a{
	color:white;
}
.center_1{
	background:url(../image/dasheng.jpg);
}
.bottom_2{
	
}